Linux-audio-user July 2011

linux-audio-user@lists.linuxaudio.org

103 participants
107 discussions

by Daniel Worth

There is still time to get your Tunestorm #5 submissions in. DON'T MISS OUT! This on is just a 15 second song so no excuses. You have till the end of the day tomorrow. Daniel Worth Host The Open Source Musician Podcast http://opensourcemusician.com

14 years, 6 months

[LAU] volume settings and keeping bits

by Andrew Gaydenko

For music playing back I use a player which uses gstreamer as an engine. The player uses an appropriate gst API for setting (software) volume level. Almost all content in my music collection is 16 bit depth. gst forwards a stream to hdsp alsa driver, and then card's spdif out is used to transfer a stream to external DAC, which is set to accept 24 bit stream in accordance with card's bit depth format. DAC chip itself has 20 bit word length (PCM63). The question is, does gst attenuate samples after converting them into format with more rather 16 bit? The thing is, I'd be happy to know I have those 24 db (at least theoretically, 20 bit DAC - 16 bit content = 4 bit = 24 db) at which I can reduce level in a player without loosing bits. a

14 years, 6 months

[LAU] Jack "Force 16 bit"

by Moshe Werner

Hi all, I've managed to install Ubuntustudio 10.10 on my Macbook pro. When I tried to work on Ardour I got terrible distortion. So I tried to see where it comes from. Checked the master, OK. Checked the Sound card (gnome alsa mixer), also good. I thought I'll try some different settings within Jack, so I set the "Force 16 bit" parameter in Jack, while Ardour is still set to "Sample Format"=32 bit floating point. Now the distortion is gone but I don't know if it was the right thing to do. Anyone knows why this helped me? And more than this, did I do the right thing or have I done something really stupid... Appreciate your opinions, Moshe

14 years, 6 months

[LAU] tablet as musical interface

by Atte André Jensen

Hi Deep in another thread I jut learned about the WeTab (http://wetab.mobi/en/). This made me wonder if there are tablets out there that would be a viable alternative to something like the lemur (http://www.jazzmutant.com/lemur_overview.php). For instance, is there a tablet that will run pd and let me multi-touch interact with it? Anyone actually experimented with something along those lines? -- Atte http://atte.dk http://modlys.dk

14 years, 6 months

[LAU] wanted: wireless midi controller with at least one fader

by Jörn Nettingsmeier

hi *! i'm looking for some wireless controller box with the following features: * sends and receives generic midi data * has at least one fader, preferrably motorized * has some freely definable knobs with sane midi output (no NRPN weirdness) * works with ALSA ootb (if it's a USB device), or: * has midi in and out ports on the base station something like the frontier design tranzport, but without the driver pain and with a fader tacked on. thanks in advance, jörn

14 years, 6 months

[LAU] Alan Ernest "Cal" Calvert dies at 61

by Gabriel Beddingfield

Friends: Cal, the lead developer of Yoshimi, passed away on July 2 in Victoria, Australia. http://tributes.couriermail.com.au/obituaries/couriermail-au/obituary.aspx?… While this was not unexpected, we're all very sad to see him go. I'm doubt that his family has any idea what he meant to us. If anyone has an idea on how we can show our appreciation, please share it. -gabriel

14 years, 6 months

[LAU] Ceres3 on a current music LiveCD?

by NJCross

Could someone guide me to an iso file for a working music liveCD which includes a working version of Ceres3. I need to create an AudioSculpt partial tracking file from a sound file, so could use Sculpttool instead but it needs to be on liveCD or simple to install. Why doesn't IRCAM allow any free access to analysis tools like superVP? Anyway, if not, any ideas? NJC

14 years, 6 months

[LAU] rt-patch 23-Jul-2011

by Ralf Mardorf

3.0-rt2 So, the "rt patch emulation" ex kernel 2.6.39 might be less good than a kernel that is patched? Until now I build linux-image-2.6.33.9-rt31_2.6.33.9-rt31-10.00.Custom_amd64.deb linux-image-2.6.39.1_2.6.39.1-10.00.Custom_amd64.deb but I only produced music with 2.6.33.9-rt31 until now, dunno if 2.6.39 isn't as good as a kernel-rt. Any information, experiences? - Ralf

14 years, 6 months

[LAU] Changing the Bit Depth

by Steven Tonge

Hi, Does anyone know of a program/plugin that can change the bit depth of an audio stream in real time. So for example, you could feed the output of a synth into it and have it come out at 8-bit. Thanks Steven

14 years, 6 months

[LAU] Le Puzzle du Batteur - The Drummer's 'G'igsaw: GNU Bash + GNU sed replace gvim

by Phil Hézaine

Le Puzzle du Batteur - The Drummer's 'G'igsaw ***** Polymetric editor for Drums and Percussions based on Lilypond + GUI for randomization. (midi timing and/or volume) ****** PACKAGES You have to install: GNU Lilypond >= 2.12.0 http://lilypond.org/web/install/ midicomp 0.0.4 http://midicomp.opensrc.org/midicomp-0.0.4.tar.gz (compile in /usr/local/midicomp... and move midicomp.bin in /usr/local/bin Python 2.6.x with Tk option activated. Already in your Linux distribution. GNU Bash and GNU sed 4.2 by default in your Linux distribution. As default midi config I use Timidity++ 2.13.2 with eawpatches. ****** INSTALLATION Untar the archive. (tar jxvf ....) In your terminal go to your Drummer-s-Gigsaw's repertory. cd /home/....../Drummer-s-Gigsaw and run the bash script: sh INSTALL.sh You are done. ****** * In this new version you no longer need to gvim. Thus you can use your preferred text editor or even a dedicated editor like Frescobaldi or Lilypondtool... * Now you can write all notes values, from whole note (1) up to * one-hundred-and-twenty-eighth note (128) and even dotted values. * The manual is updated. (translated in my terrible English) * Le Puzzle du Batteur/The Drummer's 'G'igsaw is under GPLv3 or + ****** This new version at: http://philippe.hezaine.free.fr/spip.php?article46 Have fun. Phil.

14 years, 6 months

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Linux-audio-user July 2011